Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

In which condition ulcer continues, Complete the sentence by choosing one o...

Complete the sentence by choosing one of the given biological terms. If an ulcer continues and ultimately erodes all the way through the wall of stomach or duodenum, condition

Phloem, why phloem made of living cells

why phloem made of living cells

What is the probability of two individuals, What is the probability of two ...

What is the probability of two individuals (AaBBccDd and aaBbCcDd) having a child with the following genotype AaBBCcDD?

Psychological disorders, PSYCHOLOGICAL DISORDERS - 1 .       Anxiety ...

PSYCHOLOGICAL DISORDERS - 1 .       Anxiety Disorders 2 .       Obsessive compulsive disorders 3.       Attention deficit disorder 4 .       Mood disorders

Define nutritional availability - microbial survival, Define Nutritional Av...

Define Nutritional Availability - Microbial Survival and Growth? Food borne microbes are chemotrophs. Generally the types of microorganisms present on a particular food are the

How genes can be exchanged between chromatids, Q. How Genes can be exchange...

Q. How Genes can be exchanged between chromatids? When two homologous chromosomes physically exchangecorresponding segments during prophase I of meiosis, geneticists call it cr

Explain the procedure for preparation of culture media, Explain the Procedu...

Explain the Procedure for Preparation of Culture Media? Now carry out the exercise following the steps given herewith: 1. To prepare potato dextrose medium, first, peel off

Different types of ecosystem, An ecosystem is a self sufficient interacting...

An ecosystem is a self sufficient interacting system in the biosphere. Eg. forest, desert, pond etc. almost, all the ecosystem have more or less similar fundamental plan for their

Symmetry - metazoa, Symmetry - Metazoa All living organisms have some ...

Symmetry - Metazoa All living organisms have some body shape and form. The general body plan of animals may be organized in one of several ways . Arrangement of parts or organ

Cow-pox (vaccinia), C o w - po x (vaccinia) E p ide...

C o w - po x (vaccinia) E p idemiology: This infection, although mostly occurring in cows, sometimes also occurs in buffaloes. Under natural conditions, t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd